public AndWhere ( string query, string column, WhereOperator op, string parameter ) : string | ||
query | string | The query. |
column | string | The column subject of the WHERE clause. |
op | WhereOperator | The operator. |
parameter | string | The name of the parameter for the WHERE clause. |
return | string |
/// <summary> /// Releases the lock. /// </summary> public override void Release() { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); DbConnection connection = builder.GetConnection(_connString); DbTransaction transaction = _sqlStorageProviderUtility.BeginTransaction(connection); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("SearchIndexLock"); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", _name)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = _sqlStorageProviderUtility.ExecuteNonQuery(command, false); if (rows == 1) { _sqlStorageProviderUtility.CommitTransaction(transaction); } else { _sqlStorageProviderUtility.RollbackTransaction(transaction); } }
public override void RenameFile(string from, string to) { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); DbConnection connection = builder.GetConnection(_connString); DbTransaction transaction = _sqlStorageProviderUtility.BeginTransaction(connection); QueryBuilder queryBuilder = new QueryBuilder(builder); if (!FileExists(transaction, from)) { _sqlStorageProviderUtility.RollbackTransaction(transaction); throw new ArgumentException("File does not exist", "from"); } if (FileExists(transaction, to)) { _sqlStorageProviderUtility.RollbackTransaction(transaction); throw new ArgumentException("File already exists", "to"); } string query = queryBuilder.Update("SearchIndex", new string[] { "Name" }, new string[] { "NewName" }); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "OldName"); List <Parameter> parameters = new List <Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "NewName", to)); parameters.Add(new Parameter(ParameterType.String, "OldName", from)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = _sqlStorageProviderUtility.ExecuteNonQuery(command, false); if (rows != 1) { _sqlStorageProviderUtility.RollbackTransaction(transaction); } else { _sqlStorageProviderUtility.CommitTransaction(transaction); // we delete and force a redownload, since we can't do this in an atomic way if (_cacheDirectory.FileExists(from)) { _cacheDirectory.DeleteFile(from); } // drop old cached data as it's wrong now if (_cacheDirectory.FileExists(from + ".blob")) { _cacheDirectory.DeleteFile(from + ".blob"); } } }
/// <summary> /// Obtains the lock. /// </summary> /// <returns><c>true</c> if the lock has been obtained, <c>false</c> otherwise.</returns> public override bool Obtain() { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); DbConnection connection = builder.GetConnection(_connString); DbTransaction transaction = _sqlStorageProviderUtility.BeginTransaction(connection); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("SearchIndexLock"); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", _name)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = _sqlStorageProviderUtility.ExecuteNonQuery(command, false); if (rows != 0) { _sqlStorageProviderUtility.RollbackTransaction(transaction); return(false); // Deletion command failed (0 is the only accepted value) } query = queryBuilder.InsertInto("SearchIndexLock", new string[] { "wiki", "Name", "Value" }, new string[] { "Wiki", "Name", "Value" }); parameters = new List <Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", _name)); parameters.Add(new Parameter(ParameterType.String, "Value", "locked")); command = builder.GetCommand(transaction, query, parameters); rows = _sqlStorageProviderUtility.ExecuteNonQuery(command, false); if (rows == 1) { _sqlStorageProviderUtility.CommitTransaction(transaction); } else { _sqlStorageProviderUtility.RollbackTransaction(transaction); } return(rows == 1); }
/// <summary> /// Deletes a file. /// </summary> /// <param name="name">The name of the file to be deleted.</param> public override void DeleteFile(string name) { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); DbConnection connection = builder.GetConnection(_connString); DbTransaction transaction = _sqlStorageProviderUtility.BeginTransaction(connection); if (!FileExists(transaction, name)) { _sqlStorageProviderUtility.RollbackTransaction(transaction); return; } QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("SearchIndex"); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", name)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = _sqlStorageProviderUtility.ExecuteNonQuery(command, false); if (rows != 1) { _sqlStorageProviderUtility.RollbackTransaction(transaction); } else { _sqlStorageProviderUtility.CommitTransaction(transaction); if (_cacheDirectory.FileExists(name + ".blob")) { _cacheDirectory.DeleteFile(name + ".blob"); } if (_cacheDirectory.FileExists(name)) { _cacheDirectory.DeleteFile(name); } } }
private bool FileExists(DbTransaction transaction, string name) { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectCountFrom("SearchIndex"); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", name)); DbCommand command = builder.GetCommand(transaction, query, parameters); int count = _sqlStorageProviderUtility.ExecuteScalar <int>(command, -1, false); return(count == 1); }
/// <summary> /// Determines whether this instance is locked. /// </summary> /// <returns><c>true</c> if this instance is locked; otherwise, <c>false</c>.</returns> public override bool IsLocked() { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("SearchIndexLock"); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", _name)); DbCommand command = builder.GetCommand(_connString, query, parameters); DbDataReader reader = _sqlStorageProviderUtility.ExecuteReader(command); if (reader != null) { string result = null; if (reader.Read()) { result = reader["Value"] as string; } _sqlStorageProviderUtility.CloseReader(command, reader); return(result == "locked"); } else { return(false); } }
/// <summary> /// Get last time a file has been modified. /// </summary> /// <param name="name">The name of the file.</param> /// <returns>Last modified time.</returns> public override long FileModified(string name) { ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("SearchIndex", new string[] { "LastModified" }); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Wiki", _wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", name)); DbCommand command = builder.GetCommand(_connString, query, parameters); DbDataReader reader = _sqlStorageProviderUtility.ExecuteReader(command); if (reader != null) { long lastModified = 0; if (reader.Read()) { lastModified = ((DateTime)reader["LastModified"]).Ticks; } _sqlStorageProviderUtility.CloseReader(command, reader); return(lastModified); } else { return(0); } }
/// <summary> /// Deletes a revision of a page content. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="page">The page.</param> /// <param name="revision">The revision.</param> /// <returns><c>true</c> if the content ir deleted, <c>false</c> otherwise.</returns> private bool DeleteContent(DbConnection connection, PageInfo page, int revision) { string name, nspace; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("PageContent"); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "Revision", WhereOperator.Equals, "Revision"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.String, "Revision", revision)); DbCommand command = builder.GetCommand(connection, query, parameters); int rows = ExecuteNonQuery(command, false); return rows > 0; }
/// <summary> /// Gets the Backup/Revision numbers of a Page. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="page">The Page to get the Backups of.</param> /// <returns>The Backup/Revision numbers.</returns> private int[] GetBackups(DbConnection connection, PageInfo page) { if(GetPage(connection, page.FullName) == null) { return null; } string name, nspace; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("PageContent", new string[] { "Revision" }); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "Revision", WhereOperator.GreaterThanOrEqualTo, "Revision"); query = queryBuilder.OrderBy(query, new[] { "Revision" }, new[] { Ordering.Asc }); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.Int16, "Revision", FirstRevision)); DbCommand command = builder.GetCommand(connection, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { List<int> result = new List<int>(100); while(reader.Read()) { result.Add((short)reader["Revision"]); } CloseReader(reader); return result.ToArray(); } else return null; }
/// <summary> /// Sets the number of times a file was retrieved. /// </summary> /// <param name="fullName">The full name of the file.</param> /// <param name="count">The count to set.</param> /// <exception cref="ArgumentNullException">If <paramref name="fullName"/> is <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="fullName"/> is empty.</exception> /// <exception cref="ArgumentOutOfRangeException">If <paramref name="count"/> is less than zero.</exception> public void SetFileRetrievalCount(string fullName, int count) { if(fullName == null) throw new ArgumentNullException("fullName"); if(fullName.Length == 0) throw new ArgumentException("Full Name cannot be empty", "fullName"); if(count < 0) throw new ArgumentOutOfRangeException("count", "Count must be greater than or equal to zero"); ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string directory, filename; SplitFileFullName(fullName, out directory, out filename); string query = queryBuilder.Update("File", new string[] { "Downloads" }, new string[] { "Downloads" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Directory", WhereOperator.Equals, "Directory"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", filename)); parameters.Add(new Parameter(ParameterType.String, "Directory", directory)); parameters.Add(new Parameter(ParameterType.Int32, "Downloads", count)); DbCommand command = builder.GetCommand(connString, query, parameters); ExecuteNonQuery(command); }
/// <summary> /// Stores a Page Attachment. /// </summary> /// <param name="pageInfo">The Page Info that owns the Attachment.</param> /// <param name="name">The name of the Attachment, for example "myfile.jpg".</param> /// <param name="sourceStream">A Stream object used as <b>source</b> of a byte stream, /// i.e. the method reads from the Stream and stores the content properly.</param> /// <param name="overwrite"><c>true</c> to overwrite an existing Attachment.</param> /// <returns><c>true</c> if the Attachment is stored, <c>false</c> otherwise.</returns> /// <remarks>If <b>overwrite</b> is <c>false</c> and Attachment already exists, the method returns <c>false</c>.</remarks> /// <exception cref="ArgumentNullException">If <paramref name="pageInfo"/>, <paramref name="name"/> or <paramref name="sourceStream"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="name"/> is empty or if <paramref name="sourceStream"/> does not support reading.</exception> public bool StorePageAttachment(PageInfo pageInfo, string name, System.IO.Stream sourceStream, bool overwrite) { if(pageInfo == null) throw new ArgumentNullException("pageInfo"); if(name == null) throw new ArgumentNullException("name"); if(name.Length == 0) throw new ArgumentException("Name cannot be empty", "name"); if(sourceStream == null) throw new ArgumentNullException("sourceStream"); if(!sourceStream.CanRead) throw new ArgumentException("Cannot read from Source Stream", "sourceStream"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); bool attachmentExists = AttachmentExists(transaction, pageInfo, name); if(attachmentExists && !overwrite) { RollbackTransaction(transaction); return false; } // To achieve decent performance, an UPDATE query is issued if the attachment exists, // otherwise an INSERT query is issued QueryBuilder queryBuilder = new QueryBuilder(builder); string query; List<Parameter> parameters; byte[] attachmentData = null; int size = Tools.ReadStream(sourceStream, ref attachmentData, MaxFileSize); if(size < 0) { RollbackTransaction(transaction); throw new ArgumentException("Source Stream contains too much data", "sourceStream"); } if(attachmentExists) { query = queryBuilder.Update("Attachment", new string[] { "Size", "LastModified", "Data" }, new string[] { "Size", "LastModified", "Data" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); parameters = new List<Parameter>(5); parameters.Add(new Parameter(ParameterType.Int64, "Size", (long)size)); parameters.Add(new Parameter(ParameterType.DateTime, "LastModified", DateTime.Now)); parameters.Add(new Parameter(ParameterType.ByteArray, "Data", attachmentData)); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); } else { query = queryBuilder.InsertInto("Attachment", new string[] { "Name", "Page", "Size", "Downloads", "LastModified", "Data" }, new string[] { "Name", "Page", "Size", "Downloads", "LastModified", "Data" }); parameters = new List<Parameter>(6); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); parameters.Add(new Parameter(ParameterType.Int64, "Size", (long)size)); parameters.Add(new Parameter(ParameterType.Int32, "Downloads", 0)); parameters.Add(new Parameter(ParameterType.DateTime, "LastModified", DateTime.Now)); parameters.Add(new Parameter(ParameterType.ByteArray, "Data", attachmentData)); } DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows == 1) CommitTransaction(transaction); else RollbackTransaction(transaction); return rows == 1; }
/// <summary> /// Gets the content of a specific revision of a page. /// </summary> /// <param name="transaction">A database transaction.</param> /// <param name="page">The page.</param> /// <param name="revision">The revision.</param> /// <returns>The content.</returns> private PageContent GetContent(DbTransaction transaction, PageInfo page, int revision) { // Internal version to work with GetContent, GetBackupContent, GetDraft ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string name, nspace; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; string query = queryBuilder.SelectFrom("PageContent", "PageKeyword", new string[] { "Page", "Namespace", "Revision" }, new string[] { "Page", "Namespace", "Revision" }, Join.LeftJoin, new string[] { "Title", "User", "LastModified", "Comment", "Content", "Description" }, new string[] { "Keyword" }); query = queryBuilder.Where(query, "PageContent", "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "PageContent", "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "PageContent", "Revision", WhereOperator.Equals, "Revision"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.Int16, "Revision", (short)revision)); DbCommand command = builder.GetCommand(transaction, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { PageContent result = null; string title = null, user = null, comment = null, content = null, description = null; DateTime dateTime = DateTime.MinValue; List<string> keywords = new List<string>(10); while(reader.Read()) { if(title == null) { title = reader["PageContent_Title"] as string; user = reader["PageContent_User"] as string; dateTime = (DateTime)reader["PageContent_LastModified"]; comment = GetNullableColumn<string>(reader, "PageContent_Comment", ""); content = reader["PageContent_Content"] as string; description = GetNullableColumn<string>(reader, "PageContent_Description", null); } if(!IsDBNull(reader, "PageKeyword_Keyword")) { keywords.Add(reader["PageKeyword_Keyword"] as string); } } if(title != null) { result = new PageContent(page, title, user, dateTime, comment, content, keywords.ToArray(), description); } CloseReader(reader); return result; } else return null; }
/// <summary> /// Renames a Page Attachment. /// </summary> /// <param name="pageInfo">The Page Info that owns the Attachment.</param> /// <param name="oldName">The old name of the Attachment.</param> /// <param name="newName">The new name of the Attachment.</param> /// <returns><c>true</c> if the Attachment is renamed, false otherwise.</returns> /// <exception cref="ArgumentNullException">If <paramref name="pageInfo"/>, <paramref name="oldName"/> or <paramref name="newName"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="pageInfo"/>, <paramref name="oldName"/> or <paramref name="newName"/> are empty, /// or if the page or old attachment do not exist, or the new attachment name already exists.</exception> public bool RenamePageAttachment(PageInfo pageInfo, string oldName, string newName) { if(pageInfo == null) throw new ArgumentNullException("pageInfo"); if(oldName == null) throw new ArgumentNullException("oldName"); if(oldName.Length == 0) throw new ArgumentException("Old Name cannot be empty", "oldName"); if(newName == null) throw new ArgumentNullException("newName"); if(newName.Length == 0) throw new ArgumentException("New Name cannot be empty", "newName"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(!AttachmentExists(transaction, pageInfo, oldName)) { RollbackTransaction(transaction); throw new ArgumentException("Attachment does not exist", "name"); } if(AttachmentExists(transaction, pageInfo, newName)) { RollbackTransaction(transaction); throw new ArgumentException("Attachment already exists", "name"); } QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.Update("Attachment", new string[] { "Name" }, new string[] { "NewName" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "OldName"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "NewName", newName)); parameters.Add(new Parameter(ParameterType.String, "OldName", oldName)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows == 1) CommitTransaction(transaction); else RollbackTransaction(transaction); return rows == 1; }
/// <summary> /// Determines whether a page attachment exists. /// </summary> /// <param name="transaction">A database transaction.</param> /// <param name="page">The page.</param> /// <param name="name">The attachment.</param> /// <returns><c>true</c> if the attachment exists, <c>false</c> otherwise.</returns> private bool AttachmentExists(DbTransaction transaction, PageInfo page, string name) { ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectCountFrom("Attachment"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", page.FullName)); DbCommand command = builder.GetCommand(transaction, query, parameters); int count = ExecuteScalar<int>(command, -1, false); return count == 1; }
/// <summary> /// Deletes a File. /// </summary> /// <param name="fullName">The full name of the File.</param> /// <returns><c>true</c> if the File is deleted, <c>false</c> otherwise.</returns> /// <exception cref="ArgumentNullException">If <paramref name="fullName"/> is <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="fullName"/> is empty or it does not exist.</exception> public bool DeleteFile(string fullName) { if(fullName == null) throw new ArgumentNullException("fullName"); if(fullName.Length == 0) throw new ArgumentException("Full Name cannot be empty", "fullName"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(!FileExists(transaction, fullName)) { RollbackTransaction(transaction); throw new ArgumentException("File does not exist", "fullName"); } QueryBuilder queryBuilder = new QueryBuilder(builder); string directory, filename; SplitFileFullName(fullName, out directory, out filename); string query = queryBuilder.DeleteFrom("File"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Directory", WhereOperator.Equals, "Directory"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", filename)); parameters.Add(new Parameter(ParameterType.String, "Directory", directory)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows == 1) CommitTransaction(transaction); else RollbackTransaction(transaction); return rows == 1; }
/// <summary> /// Gets a page. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="fullName">The full name of the page.</param> /// <returns>The <see cref="T:PageInfo" />, or <c>null</c> if no page is found.</returns> private PageInfo GetPage(DbConnection connection, string fullName) { string nspace, name; NameTools.ExpandFullName(fullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("Page"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(connection, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { PageInfo result = null; if(reader.Read()) { result = new PageInfo(NameTools.GetFullName(reader["Namespace"] as string, reader["Name"] as string), this, (DateTime)reader["CreationDateTime"]); } CloseReader(reader); return result; } else return null; }
/// <summary> /// Binds a Page with one or more Categories. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="page">The Page to bind.</param> /// <param name="categories">The Categories to bind the Page with.</param> /// <returns>True if the binding succeeded.</returns> /// <remarks>After a successful operation, the Page is bound with all and only the categories passed as argument.</remarks> private bool RebindPage(DbConnection connection, PageInfo page, string[] categories) { string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("CategoryBinding"); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(connection, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows < 0) return false; if(categories.Length > 0) { string finalQuery = ""; parameters = new List<Parameter>(categories.Length * 3); int count = 0; string countString; foreach(string cat in categories) { countString = count.ToString(); query = queryBuilder.InsertInto("CategoryBinding", new string[] { "Namespace", "Category", "Page" }, new string[] { "Namespace" + countString, "Category" + countString, "Page" + countString }); finalQuery = queryBuilder.AppendForBatch(finalQuery, query); parameters.Add(new Parameter(ParameterType.String, "Namespace" + countString, nspace)); parameters.Add(new Parameter(ParameterType.String, "Category" + countString, NameTools.GetLocalName(cat))); parameters.Add(new Parameter(ParameterType.String, "Page" + countString, name)); count++; } command = builder.GetCommand(connection, finalQuery, parameters); rows = ExecuteNonQuery(command, false); return rows == categories.Length; } else return true; }
/// <summary> /// Gets a namespace. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="name">The name of the namespace (cannot be <c>null</c> or empty).</param> /// <returns>The <see cref="T:NamespaceInfo" />, or <c>null</c> if no namespace is found.</returns> private NamespaceInfo GetNamespace(DbConnection connection, string name) { ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); // select ... from Namespace left join Page on Namespace.DefaultPage = Page.Name where Namespace.Name = <name> and (Namespace.DefaultPage is null or Page.Namespace = <name>) string query = queryBuilder.SelectFrom("Namespace", "Page", "DefaultPage", "Name", Join.LeftJoin, new string[] { "Name", "DefaultPage" }, new string[] { "CreationDateTime" }); query = queryBuilder.Where(query, "Namespace", "Name", WhereOperator.Equals, "Name1"); query = queryBuilder.AndWhere(query, "Namespace", "DefaultPage", WhereOperator.IsNull, null, true, false); query = queryBuilder.OrWhere(query, "Page", "Namespace", WhereOperator.Equals, "Name2", false, true); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name1", name)); parameters.Add(new Parameter(ParameterType.String, "Name2", name)); DbCommand command = builder.GetCommand(connection, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { NamespaceInfo result = null; if(reader.Read()) { string realName = reader["Namespace_Name"] as string; string page = GetNullableColumn<string>(reader, "Namespace_DefaultPage", null); PageInfo defaultPage = string.IsNullOrEmpty(page) ? null : new PageInfo(NameTools.GetFullName(realName, page), this, (DateTime)reader["Page_CreationDateTime"]); result = new NamespaceInfo(realName, this, defaultPage); } CloseReader(reader); return result; } else return null; }
/// <summary> /// Removes all messages for a page and stores the new messages. /// </summary> /// <param name="page">The page.</param> /// <param name="messages">The new messages to store.</param> /// <returns><c>true</c> if the messages are stored, <c>false</c> otherwise.</returns> /// <exception cref="ArgumentNullException">If <paramref name="page"/> or <paramref name="messages"/> are <c>null</c>.</exception> public bool BulkStoreMessages(PageInfo page, Message[] messages) { if(page == null) throw new ArgumentNullException("page"); if(messages == null) throw new ArgumentNullException("messages"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(GetPage(transaction, page.FullName) == null) { RollbackTransaction(transaction); return false; } foreach(Message msg in GetMessages(transaction, page)) { UnindexMessageTree(page, msg, transaction); } string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("Message"); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(transaction, query, parameters); ExecuteNonQuery(command, false); List<Message> allMessages; List<int> parents; UnTreeMessages(messages, out allMessages, out parents, -1); string finalQuery = ""; int count = 1; string countString; parameters = new List<Parameter>(MaxStatementsInBatch * 8); int rowsDone = 0; for(int i = 0; i < allMessages.Count; i++) { // Execute the batch in smaller chunks Message msg = allMessages[i]; int parent = parents[i]; countString = count.ToString(); query = queryBuilder.InsertInto("Message", new string[] { "Page", "Namespace", "Id", "Parent", "Username", "Subject", "DateTime", "Body" }, new string[] { "Page" + countString, "Namespace" + countString, "Id" + countString, "Parent" + countString, "Username" + countString, "Subject" + countString, "DateTime" + countString, "Body" + countString }); parameters.Add(new Parameter(ParameterType.String, "Page" + countString, name)); parameters.Add(new Parameter(ParameterType.String, "Namespace" + countString, nspace)); parameters.Add(new Parameter(ParameterType.Int16, "Id" + countString, (short)msg.ID)); if(parent != -1) parameters.Add(new Parameter(ParameterType.Int16, "Parent" + countString, parent)); else parameters.Add(new Parameter(ParameterType.Int16, "Parent" + countString, DBNull.Value)); parameters.Add(new Parameter(ParameterType.String, "Username" + countString, msg.Username)); parameters.Add(new Parameter(ParameterType.String, "Subject" + countString, msg.Subject)); parameters.Add(new Parameter(ParameterType.DateTime, "DateTime" + countString, msg.DateTime)); parameters.Add(new Parameter(ParameterType.String, "Body" + countString, msg.Body)); finalQuery = queryBuilder.AppendForBatch(finalQuery, query); count++; if(count == MaxStatementsInBatch) { command = builder.GetCommand(transaction, finalQuery, parameters); rowsDone += ExecuteNonQuery(command, false); finalQuery = ""; count = 1; parameters.Clear(); } } if(finalQuery.Length > 0) { command = builder.GetCommand(transaction, finalQuery, parameters); rowsDone += ExecuteNonQuery(command, false); } if(rowsDone == allMessages.Count) { foreach(Message msg in messages) { IndexMessageTree(page, msg, transaction); } CommitTransaction(transaction); return true; } else { RollbackTransaction(transaction); return false; } }
/// <summary> /// Gets the Page Messages. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="page">The Page.</param> /// <returns>The list of the <b>first-level</b> Messages, containing the replies properly nested, sorted by date/time.</returns> private Message[] GetMessages(DbConnection connection, PageInfo page) { if(GetPage(connection, page.FullName) == null) return null; // 1. Load all messages in memory in a dictionary id->message // 2. Build tree using ParentID string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("Message", new string[] { "Id", "Parent", "Username", "Subject", "DateTime", "Body" }); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.OrderBy(query, new string[] { "DateTime", "Id" }, new Ordering[] { Ordering.Asc, Ordering.Asc }); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(connection, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { Dictionary<short, Message> allMessages = new Dictionary<short, Message>(50); List<short> ids = new List<short>(50); List<short?> parents = new List<short?>(50); while(reader.Read()) { Message msg = new Message((short)reader["Id"], reader["Username"] as string, reader["Subject"] as string, (DateTime)reader["DateTime"], reader["Body"] as string); ids.Add((short)msg.ID); // Import from V2: parent = -1, otherwise null if(!IsDBNull(reader, "Parent")) { short par = (short)reader["Parent"]; if(par >= 0) parents.Add(par); else parents.Add(null); } else parents.Add(null); allMessages.Add((short)msg.ID, msg); } CloseReader(reader); // Add messages to their parents and build the top-level messages list List<Message> result = new List<Message>(20); for(int i = 0; i < ids.Count; i++) { short? currentParent = parents[i]; short currentId = ids[i]; if(currentParent.HasValue) { List<Message> replies = new List<Message>(allMessages[currentParent.Value].Replies); replies.Add(allMessages[currentId]); allMessages[currentParent.Value].Replies = replies.ToArray(); } else result.Add(allMessages[currentId]); } return result.ToArray(); } else return null; }
/// <summary> /// Renames a Category. /// </summary> /// <param name="category">The Category to rename.</param> /// <param name="newName">The new Name.</param> /// <returns>The correct CategoryInfo object.</returns> /// <exception cref="ArgumentNullException">If <paramref name="category"/> or <paramref name="newName"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="newName"/> is empty.</exception> public CategoryInfo RenameCategory(CategoryInfo category, string newName) { if(category == null) throw new ArgumentNullException("category"); if(newName == null) throw new ArgumentNullException("newName"); if(newName.Length == 0) throw new ArgumentException("New Name cannot be empty", "newName"); string nspace = null; string name = null; NameTools.ExpandFullName(category.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.Update("Category", new string[] { "Name" }, new string[] { "NewName" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "OldName"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "NewName", newName)); parameters.Add(new Parameter(ParameterType.String, "OldName", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows > 0) { CategoryInfo result = GetCategory(transaction, NameTools.GetFullName(nspace, newName)); CommitTransaction(transaction); return result; } else { RollbackTransaction(transaction); return null; } }
/// <summary> /// Gets the details of a page attachment. /// </summary> /// <param name="pageInfo">The page that owns the attachment.</param> /// <param name="name">The name of the attachment, for example "myfile.jpg".</param> /// <returns>The details of the attachment, or <c>null</c> if the attachment does not exist.</returns> /// <exception cref="ArgumentNullException">If <paramref name="pageInfo"/> or <paramref name="name"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="name"/> is empty.</exception> public FileDetails GetPageAttachmentDetails(PageInfo pageInfo, string name) { if(pageInfo == null) throw new ArgumentNullException("pageInfo"); if(name == null) throw new ArgumentNullException("name"); if(name.Length == 0) throw new ArgumentException("Name cannot be empty"); ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("Attachment", new string[] { "Size", "Downloads", "LastModified" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); DbCommand command = builder.GetCommand(connString, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { FileDetails details = null; if(reader.Read()) { details = new FileDetails((long)reader["Size"], (DateTime)reader["LastModified"], (int)reader["Downloads"]); } CloseReader(command, reader); return details; } else return null; }
/// <summary> /// Removes a Category. /// </summary> /// <param name="transaction">A database transaction.</param> /// <param name="category">The Category to remove.</param> /// <returns>True if the Category has been removed successfully.</returns> private bool RemoveCategory(DbTransaction transaction, CategoryInfo category) { string nspace = null; string name = null; NameTools.ExpandFullName(category.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("Category"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); return rows > 0; }
/// <summary> /// Gets a category. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="fullName">The full name of the category.</param> /// <returns>The <see cref="T:CategoryInfo" />, or <c>null</c> if no category is found.</returns> private CategoryInfo GetCategory(DbConnection connection, string fullName) { string nspace = null; string name = null; NameTools.ExpandFullName(fullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("Category", "CategoryBinding", new string[] { "Name", "Namespace" }, new string[] { "Category", "Namespace" }, Join.LeftJoin, new string[] { "Name", "Namespace" }, new string[] { "Page" }); query = queryBuilder.Where(query, "Category", "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "Category", "Name", WhereOperator.Equals, "Name"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.String, "Name", name)); DbCommand command = builder.GetCommand(connection, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { CategoryInfo result = null; List<string> pages = new List<string>(50); while(reader.Read()) { if(result == null) result = new CategoryInfo(NameTools.GetFullName(reader["Category_Namespace"] as string, reader["Category_Name"] as string), this); if(!IsDBNull(reader, "CategoryBinding_Page")) { pages.Add(NameTools.GetFullName(reader["Category_Namespace"] as string, reader["CategoryBinding_Page"] as string)); } } CloseReader(reader); if(result != null) result.Pages = pages.ToArray(); return result; } else return null; }
/// <summary> /// Determines whether a file exists. /// </summary> /// <param name="transaction">A database transaction.</param> /// <param name="fullName">The file full name, for example "/file.txt" or "/directory/file.txt".</param> /// <returns><c>true</c> if the file exists, <c>false</c> otherwise.</returns> private bool FileExists(DbTransaction transaction, string fullName) { string directory, file; SplitFileFullName(fullName, out directory, out file); ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectCountFrom("File"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Directory", WhereOperator.Equals, "Directory"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", file)); parameters.Add(new Parameter(ParameterType.String, "Directory", directory)); DbCommand command = builder.GetCommand(transaction, query, parameters); int count = ExecuteScalar<int>(command, -1, false); return count == 1; }
/// <summary> /// Removes a Message. /// </summary> /// <param name="transaction">A database transaction.</param> /// <param name="page">The Page.</param> /// <param name="id">The ID of the Message to remove.</param> /// <param name="removeReplies">A value specifying whether or not to remove the replies.</param> /// <returns>True if the Message is removed successfully.</returns> private bool RemoveMessage(DbTransaction transaction, PageInfo page, int id, bool removeReplies) { string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; Message[] messages = GetMessages(transaction, page); if(messages == null) return false; Message message = FindMessage(messages, id); if(message == null) return false; Message parent = FindAnchestor(messages, id); int parentId = parent != null ? parent.ID : -1; UnindexMessage(page, message.ID, message.Subject, message.DateTime, message.Body, transaction); if(removeReplies) { // Recursively remove all replies BEFORE removing parent (depth-first) foreach(Message reply in message.Replies) { if(!RemoveMessage(transaction, page, reply.ID, true)) return false; } } // Remove this message ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("Message"); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "Id", WhereOperator.Equals, "Id"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.Int16, "Id", (short)id)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(!removeReplies && rows == 1) { // Update replies' parent id query = queryBuilder.Update("Message", new string[] { "Parent" }, new string[] { "NewParent" }); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "Parent", WhereOperator.Equals, "OldParent"); parameters = new List<Parameter>(4); if(parentId != -1) parameters.Add(new Parameter(ParameterType.Int16, "NewParent", parentId)); else parameters.Add(new Parameter(ParameterType.Int16, "NewParent", DBNull.Value)); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.Int16, "OldParent", (short)id)); command = builder.GetCommand(transaction, query, parameters); rows = ExecuteNonQuery(command, false); } return rows > 0; }
/// <summary> /// Gets the details of a file. /// </summary> /// <param name="fullName">The full name of the file.</param> /// <returns>The details, or <c>null</c> if the file does not exist.</returns> /// <exception cref="ArgumentNullException">If <paramref name="fullName"/> is <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="fullName"/> is empty.</exception> public FileDetails GetFileDetails(string fullName) { if(fullName == null) throw new ArgumentNullException("fullName"); if(fullName.Length == 0) throw new ArgumentException("Full Name cannot be empty", "fullName"); ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string directory, filename; SplitFileFullName(fullName, out directory, out filename); string query = queryBuilder.SelectFrom("File", new string[] { "Size", "Downloads", "LastModified" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Directory", WhereOperator.Equals, "Directory"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", filename)); parameters.Add(new Parameter(ParameterType.String, "Directory", directory)); DbCommand command = builder.GetCommand(connString, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { FileDetails details = null; if(reader.Read()) { details = new FileDetails((long)reader["Size"], (DateTime)reader["LastModified"], (int)reader["Downloads"]); } CloseReader(command, reader); return details; } else return null; }
/// <summary> /// Removes a Navigation Path. /// </summary> /// <param name="connection">A database connection.</param> /// <param name="path">The navigation path to remove.</param> /// <returns><c>true</c> if the path is removed, <c>false</c> otherwise.</returns> private bool RemoveNavigationPath(DbConnection connection, NavigationPath path) { string nspace, name; NameTools.ExpandFullName(path.FullName, out nspace, out name); if(nspace == null) nspace = ""; ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("NavigationPath"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(connection, query, parameters); int rows = ExecuteNonQuery(command, false); return rows > 0; }
/// <summary> /// Renames or moves a File. /// </summary> /// <param name="oldFullName">The old full name of the File.</param> /// <param name="newFullName">The new full name of the File.</param> /// <returns><c>true</c> if the File is renamed, <c>false</c> otherwise.</returns> /// <exception cref="ArgumentNullException">If <paramref name="oldFullName"/> or <paramref name="newFullName"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="oldFullName"/> or <paramref name="newFullName"/> are empty, or if the old file does not exist, or if the new file already exist.</exception> public bool RenameFile(string oldFullName, string newFullName) { if(oldFullName == null) throw new ArgumentNullException("oldFullName"); if(oldFullName.Length == 0) throw new ArgumentException("Old Full Name cannot be empty", "oldFullName"); if(newFullName == null) throw new ArgumentNullException("newFullName"); if(newFullName.Length == 0) throw new ArgumentException("New Full Name cannot be empty", "newFullName"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); QueryBuilder queryBuilder = new QueryBuilder(builder); if(!FileExists(transaction, oldFullName)) { RollbackTransaction(transaction); throw new ArgumentException("File does not exist", "oldFullName"); } if(FileExists(transaction, newFullName)) { RollbackTransaction(transaction); throw new ArgumentException("File already exists", "newFullPath"); } string oldDirectory, newDirectory, oldFilename, newFilename; SplitFileFullName(oldFullName, out oldDirectory, out oldFilename); SplitFileFullName(newFullName, out newDirectory, out newFilename); string query = queryBuilder.Update("File", new string[] { "Name" }, new string[] { "NewName" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "OldName"); query = queryBuilder.AndWhere(query, "Directory", WhereOperator.Equals, "OldDirectory"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "NewName", newFilename)); parameters.Add(new Parameter(ParameterType.String, "OldName", oldFilename)); parameters.Add(new Parameter(ParameterType.String, "OldDirectory", oldDirectory)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows == 1) CommitTransaction(transaction); else RollbackTransaction(transaction); return rows == 1; }
/// <summary> /// Deletes the Backups of a Page, up to a specified revision. /// </summary> /// <param name="page">The Page to delete the backups of.</param> /// <param name="revision">The newest revision to delete (newer revision are kept) o -1 to delete all the Backups.</param> /// <returns><c>true</c> if the deletion succeeded, <c>false</c> otherwise.</returns> /// <exception cref="ArgumentNullException">If <paramref name="page"/> is <c>null</c>.</exception> /// <exception cref="ArgumentOutOfRangeException">If <paramref name="revision"/> is less than -1.</exception> public bool DeleteBackups(PageInfo page, int revision) { if(page == null) throw new ArgumentNullException("page"); if(revision < -1) throw new ArgumentOutOfRangeException("revision", "Invalid Revision"); // 1. Retrieve target content (revision-1 = first kept revision) // 2. Replace the current content (delete, store) // 3. Delete all older revisions up to the specified on (included) "N-m...N" // 4. Re-number remaining revisions starting from FirstRevision (zero) to revision-1 (don't re-number revs -1, -100) ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(GetPage(transaction, page.FullName) == null) { RollbackTransaction(transaction); return false; } int[] baks = GetBackups(transaction, page); if(baks.Length > 0 && revision > baks[baks.Length - 1]) { RollbackTransaction(transaction); return true; } string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("PageContent"); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); if(revision != -1) query = queryBuilder.AndWhere(query, "Revision", WhereOperator.LessThanOrEqualTo, "Revision"); query = queryBuilder.AndWhere(query, "Revision", WhereOperator.GreaterThanOrEqualTo, "FirstRevision"); List<Parameter> parameters = new List<Parameter>(4); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); if(revision != -1) parameters.Add(new Parameter(ParameterType.Int16, "Revision", revision)); parameters.Add(new Parameter(ParameterType.Int16, "FirstRevision", FirstRevision)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows == -1) { RollbackTransaction(transaction); return false; } if(revision != -1) { int revisionDelta = revision + 1; query = queryBuilder.UpdateIncrement("PageContent", "Revision", -revisionDelta); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "Revision", WhereOperator.GreaterThanOrEqualTo, "FirstRevision"); parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.Int16, "FirstRevision", FirstRevision)); command = builder.GetCommand(transaction, query, parameters); rows = ExecuteNonQuery(command, false); if(rows > 0) CommitTransaction(transaction); else RollbackTransaction(transaction); return rows >= 0; } else { CommitTransaction(transaction); return true; } }
/// <summary> /// Retrieves a Page Attachment. /// </summary> /// <param name="pageInfo">The Page Info that owns the Attachment.</param> /// <param name="name">The name of the Attachment, for example "myfile.jpg".</param> /// <param name="destinationStream">A Stream object used as <b>destination</b> of a byte stream, /// i.e. the method writes to the Stream the file content.</param> /// <param name="countHit">A value indicating whether or not to count this retrieval in the statistics.</param> /// <returns><c>true</c> if the Attachment is retrieved, <c>false</c> otherwise.</returns> /// <exception cref="ArgumentNullException">If <paramref name="pageInfo"/>, <paramref name="name"/> or <paramref name="destinationStream"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="name"/> is empty or if <paramref name="destinationStream"/> does not support writing, /// or if the page does not have attachments or if the attachment does not exist.</exception> public bool RetrievePageAttachment(PageInfo pageInfo, string name, System.IO.Stream destinationStream, bool countHit) { if(pageInfo == null) throw new ArgumentNullException("pageInfo"); if(name == null) throw new ArgumentNullException("name"); if(name.Length == 0) throw new ArgumentException("Name cannot be empty", "name"); if(destinationStream == null) throw new ArgumentNullException("destinationStream"); if(!destinationStream.CanWrite) throw new ArgumentException("Cannot write into Destination Stream", "destinationStream"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(!AttachmentExists(transaction, pageInfo, name)) { RollbackTransaction(transaction); throw new ArgumentException("Attachment does not exist", "name"); } QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("Attachment", new string[] { "Size", "Data" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); DbCommand command = builder.GetCommand(transaction, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { bool done = false; if(reader.Read()) { int read = ReadBinaryColumn(reader, "Data", destinationStream); done = (long)read == (long)reader["Size"]; } CloseReader(reader); if(!done) { RollbackTransaction(transaction); return false; } } else { RollbackTransaction(transaction); return false; } if(countHit) { // Update download count query = queryBuilder.UpdateIncrement("Attachment", "Downloads", 1); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows != 1) { RollbackTransaction(transaction); return false; } } CommitTransaction(transaction); return true; }
/// <summary> /// Gets all the categories of a page. /// </summary> /// <param name="page">The page.</param> /// <returns>The categories, sorted by name.</returns> /// <exception cref="ArgumentNullException">If <paramref name="page"/> is <c>null</c>.</exception> public CategoryInfo[] GetCategoriesForPage(PageInfo page) { if(page == null) throw new ArgumentNullException("page"); ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string nspace, pageName; NameTools.ExpandFullName(page.FullName, out nspace, out pageName); if(nspace == null) nspace = ""; string query = queryBuilder.SelectFrom("Category", "CategoryBinding", new string[] { "Name", "Namespace" }, new string[] { "Category", "Namespace" }, Join.LeftJoin, new string[] { "Name", "Namespace" }, new string[] { "Page" }); query = queryBuilder.Where(query, "CategoryBinding", "Namespace", WhereOperator.Equals, "Namespace"); query = queryBuilder.AndWhere(query, "CategoryBinding", "Page", WhereOperator.Equals, "Page"); query = queryBuilder.OrderBy(query, new[] { "Category_Name" }, new[] { Ordering.Asc }); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); parameters.Add(new Parameter(ParameterType.String, "Page", pageName)); DbCommand command = builder.GetCommand(connString, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { List<CategoryInfo> result = new List<CategoryInfo>(20); List<string> pages = new List<string>(50); string prevName = "|||"; string name = null; while(reader.Read()) { name = reader["Category_Name"] as string; if(name != prevName) { if(prevName != "|||") { result[result.Count - 1].Pages = pages.ToArray(); pages.Clear(); } result.Add(new CategoryInfo(NameTools.GetFullName(reader["Category_Namespace"] as string, name), this)); } prevName = name; if(!IsDBNull(reader, "CategoryBinding_Page")) { pages.Add(NameTools.GetFullName(reader["Category_Namespace"] as string, reader["CategoryBinding_Page"] as string)); } } CloseReader(command, reader); if(result.Count > 0) result[result.Count - 1].Pages = pages.ToArray(); return result.ToArray(); } else return null; }
/// <summary> /// Sets the number of times a page attachment was retrieved. /// </summary> /// <param name="pageInfo">The page.</param> /// <param name="name">The name of the attachment.</param> /// <param name="count">The count to set.</param> /// <exception cref="ArgumentNullException">If <paramref name="pageInfo"/> or <paramref name="name"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="name"/> is empty.</exception> /// <exception cref="ArgumentOutOfRangeException">If <paramref name="count"/> is less than zero.</exception> public void SetPageAttachmentRetrievalCount(PageInfo pageInfo, string name, int count) { if(pageInfo == null) throw new ArgumentNullException("pageInfo"); if(name == null) throw new ArgumentNullException("name"); if(name.Length == 0) throw new ArgumentException("Name cannot be empty"); if(count < 0) throw new ArgumentOutOfRangeException("Count must be greater than or equal to zero", "count"); ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.Update("Attachment", new string[] { "Downloads" }, new string[] { "Downloads" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Page", WhereOperator.Equals, "Page"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Page", pageInfo.FullName)); parameters.Add(new Parameter(ParameterType.Int32, "Downloads", count)); DbCommand command = builder.GetCommand(connString, query, parameters); ExecuteNonQuery(command); }
/// <summary> /// Removes a Page. /// </summary> /// <param name="page">The Page to remove.</param> /// <returns>True if the Page is removed successfully.</returns> /// <exception cref="ArgumentNullException">If <paramref name="page"/> is <c>null</c>.</exception> public bool RemovePage(PageInfo page) { if(page == null) throw new ArgumentNullException("page"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(IsDefaultPage(transaction, page)) { RollbackTransaction(transaction); return false; } PageContent currentContent = GetContent(transaction, page, CurrentRevision); if(currentContent != null) { UnindexPage(currentContent, transaction); foreach(Message msg in GetMessages(transaction, page)) { UnindexMessageTree(page, msg, transaction); } } RebindPage(transaction, page, new string[0]); string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.DeleteFrom("Page"); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "Name"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Name", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows > 0) CommitTransaction(transaction); else RollbackTransaction(transaction); return rows > 0; }
/// <summary> /// Gets the total number of Messages in a Page Discussion. /// </summary> /// <param name="page">The Page.</param> /// <returns>The number of messages.</returns> /// <exception cref="ArgumentNullException">If <paramref name="page"/> is <c>null</c>.</exception> public int GetMessageCount(PageInfo page) { if(page == null) throw new ArgumentNullException("page"); ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); if(GetPage(connection, page.FullName) == null) { CloseConnection(connection); return -1; } string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectCountFrom("Message"); query = queryBuilder.Where(query, "Page", WhereOperator.Equals, "Page"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Page", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(connection, query, parameters); int count = ExecuteScalar<int>(command, 0); return count; }
/// <summary> /// Renames a Page. /// </summary> /// <param name="page">The Page to rename.</param> /// <param name="newName">The new Name.</param> /// <returns>The correct <see cref="T:PageInfo"/> object.</returns> /// <exception cref="ArgumentNullException">If <paramref name="page"/> or <paramref name="newName"/> are <c>null</c>.</exception> /// <exception cref="ArgumentException">If <paramref name="newName"/> is empty.</exception> public PageInfo RenamePage(PageInfo page, string newName) { if(page == null) throw new ArgumentNullException("page"); if(newName == null) throw new ArgumentNullException("newName"); if(newName.Length == 0) throw new ArgumentException("New Name cannot be empty", "newName"); // Check // 1. Page is default page of its namespace // 2. New name already exists ICommandBuilder builder = GetCommandBuilder(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = BeginTransaction(connection); if(GetPage(transaction, page.FullName) == null) { RollbackTransaction(transaction); return null; } if(IsDefaultPage(transaction, page)) { RollbackTransaction(transaction); return null; } if(GetPage(transaction, NameTools.GetFullName(NameTools.GetNamespace(page.FullName), NameTools.GetLocalName(newName))) != null) { RollbackTransaction(transaction); return null; } PageContent currentContent = GetContent(transaction, page, CurrentRevision); UnindexPage(currentContent, transaction); foreach(Message msg in GetMessages(transaction, page)) { UnindexMessageTree(page, msg, transaction); } string nspace, name; NameTools.ExpandFullName(page.FullName, out nspace, out name); if(nspace == null) nspace = ""; CategoryInfo[] currCategories = GetCategories(transaction, nspace == "" ? null : GetNamespace(transaction, nspace)); string lowerPageName = page.FullName.ToLowerInvariant(); List<string> pageCategories = new List<string>(10); foreach(CategoryInfo cat in currCategories) { if(Array.Find(cat.Pages, (s) => { return s.ToLowerInvariant() == lowerPageName; }) != null) { pageCategories.Add(NameTools.GetLocalName(cat.FullName)); } } RebindPage(transaction, page, new string[0]); QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.Update("Page", new string[] { "Name" }, new string[] { "NewName" }); query = queryBuilder.Where(query, "Name", WhereOperator.Equals, "OldName"); query = queryBuilder.AndWhere(query, "Namespace", WhereOperator.Equals, "Namespace"); List<Parameter> parameters = new List<Parameter>(3); parameters.Add(new Parameter(ParameterType.String, "NewName", newName)); parameters.Add(new Parameter(ParameterType.String, "OldName", name)); parameters.Add(new Parameter(ParameterType.String, "Namespace", nspace)); DbCommand command = builder.GetCommand(transaction, query, parameters); int rows = ExecuteNonQuery(command, false); if(rows > 0) { PageInfo result = new PageInfo(NameTools.GetFullName(nspace, newName), this, page.CreationDateTime); RebindPage(transaction, result, pageCategories.ToArray()); PageContent newContent = GetContent(transaction, result, CurrentRevision); IndexPage(newContent, transaction); foreach(Message msg in GetMessages(transaction, result)) { IndexMessageTree(result, msg, transaction); } CommitTransaction(transaction); return result; } else { RollbackTransaction(transaction); return null; } }
/// <summary> /// Gets all the sub-namespaces. /// </summary> /// <returns>The sub-namespaces, sorted by name.</returns> public NamespaceInfo[] GetNamespaces() { ICommandBuilder builder = GetCommandBuilder(); QueryBuilder queryBuilder = new QueryBuilder(builder); // select ... from Namespace left join Page on Namespace.DefaultPage = Page.Name where Namespace.Name <> '' and (Namespace.DefaultPage is null or Page.Namespace <> '') string query = queryBuilder.SelectFrom("Namespace", "Page", "DefaultPage", "Name", Join.LeftJoin, new string[] { "Name", "DefaultPage" }, new string[] { "CreationDateTime" }); query = queryBuilder.Where(query, "Namespace", "Name", WhereOperator.NotEquals, "Empty1"); query = queryBuilder.AndWhere(query, "Namespace", "DefaultPage", WhereOperator.IsNull, null, true, false); query = queryBuilder.OrWhere(query, "Page", "Namespace", WhereOperator.NotEquals, "Empty2", false, true); query = queryBuilder.OrderBy(query, new[] { "Namespace_Name" }, new[] { Ordering.Asc }); List<Parameter> parameters = new List<Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Empty1", "")); parameters.Add(new Parameter(ParameterType.String, "Empty2", "")); DbCommand command = builder.GetCommand(connString, query, parameters); DbDataReader reader = ExecuteReader(command); if(reader != null) { List<NamespaceInfo> result = new List<NamespaceInfo>(10); while(reader.Read()) { string realName = reader["Namespace_Name"] as string; string page = GetNullableColumn<string>(reader, "Namespace_DefaultPage", null); PageInfo defaultPage = string.IsNullOrEmpty(page) ? null : new PageInfo(NameTools.GetFullName(realName, page), this, (DateTime)reader["Page_CreationDateTime"]); // The query returns duplicate entries if the main page of two or more namespaces have the same name if(result.Find(n => { return n.Name.Equals(realName); }) == null) { result.Add(new NamespaceInfo(realName, this, defaultPage)); } } CloseReader(command, reader); return result.ToArray(); } else return null; }
/// <summary> /// Initializes a new instance of the <see cref="SqlIndexInput"/> class. /// </summary> /// <param name="sqlServerDirectory">The Sql Server Directory object.</param> /// <param name="sqlStorageProviderUtility">The SQL storage provider utility.</param> /// <param name="connString">The connection string.</param> /// <param name="wiki">The wiki.</param> /// <param name="name">The name of the file.</param> public SqlIndexInput(SqlDirectory sqlServerDirectory, ISqlStorageProviderUtility sqlStorageProviderUtility, string connString, string wiki, string name) { _sqlServerDirectory = sqlServerDirectory; _sqlStorageProviderUtility = sqlStorageProviderUtility; bool fFileNeeded = false; if (!CacheDirectory.FileExists(name)) { fFileNeeded = true; } if (name.Contains("segments")) { fFileNeeded = true; } if (fFileNeeded) { StreamOutput fileStream = _sqlServerDirectory.CreateCachedOutputAsStream(name); ICommandBuilder builder = _sqlStorageProviderUtility.GetCommandBuilder2(); DbConnection connection = builder.GetConnection(connString); DbTransaction transaction = _sqlStorageProviderUtility.BeginTransaction(connection); if (!FileExists(transaction, wiki, name)) { _sqlStorageProviderUtility.RollbackTransaction(transaction); _sqlStorageProviderUtility.CloseDbConnection(connection); throw new FileNotFoundException(); } QueryBuilder queryBuilder = new QueryBuilder(builder); string query = queryBuilder.SelectFrom("SearchIndex", new string[] { "Size", "Data" }); query = queryBuilder.Where(query, "Wiki", WhereOperator.Equals, "Wiki"); query = queryBuilder.AndWhere(query, "Name", WhereOperator.Equals, "Name"); List <Parameter> parameters = new List <Parameter>(2); parameters.Add(new Parameter(ParameterType.String, "Wiki", wiki)); parameters.Add(new Parameter(ParameterType.String, "Name", name)); DbCommand command = builder.GetCommand(transaction, query, parameters); DbDataReader reader = _sqlStorageProviderUtility.ExecuteReader(command); if (reader != null) { bool done = false; if (reader.Read()) { int read = _sqlStorageProviderUtility.ReadBinaryColumn(reader, "Data", fileStream); done = (long)read == (long)reader["Size"]; } _sqlStorageProviderUtility.CloseReader(reader); if (!done) { _sqlStorageProviderUtility.RollbackTransaction(transaction); } _sqlStorageProviderUtility.CommitTransaction(transaction); } else { _sqlStorageProviderUtility.RollbackTransaction(transaction); } fileStream.Flush(); fileStream.Close(); // and open it as an input _indexInput = CacheDirectory.OpenInput(name); } else { _indexInput = CacheDirectory.OpenInput(name); } }